Improvement in revolving fire-arms



Miren TTESA ioAvID WILLIAMSON, OEBROOKLYN, lNEW YORK, ASSiGNOE To THE.MOOEES PATENT FIEEAEMS COMPANY, OE SAME PLA OE.

IMPROVEMENT iN .REvoLt/ING Fl :aE-ARMS'.

Specification forming part of Letters PatelitNo. dhd54, dated January 5,1864.

this specification, wherein;

Figure 1 is a section ot' my improved cylinder for a revolving fire-arm,and Fig. 2 is a rear elevation of the same.

.Similar marks nt' reference denote the same parts.

Several different kinds of' metallic cartridges have been made for thecylinders of revolving fire-arms to be entered into the chambers fromthe front end, and cylinders ot' various constructions have been madefor such cartridges, I have therefore onl y represented in the drawingsthe cylinder itself, containing a metallic cartridge, as the handle orstock, hammer, and

barrel are Well known and form no part Ot' this present'invention.Radialehambers have also been formed with a tapering powder-space, and anipple has been formed on a metallic cartridgecase projecting from therear end of the cylinder, as in the patent Ot' D. Moore, dated April 28,1863. In Such cases the cylinder has been increased in length to containthe necessary charge of powder, or else a portionot' the rear ot' thecartridge has been exposed. I have discovered that the necessarystrength for anabutment in the cylinder itself, at the rea-r end of eachchamber, is Obtained when the chamber is formed with a taper orhemispherical end commencing at the rear end of the cylinder. Therebythe necessary powder-space can be obtained without increasing the lengthOf the cylinder, and hence my invention relates to a cylinder ofparallel chambers formed in this manner.

the rear openings, d d; Or the said rear ends of the chambers might beconical Or tapering from the openings d tl to the parallel portions Ot'the chambers. By this construction the metallic cartridge-case issustained at the rear end, and provision made for exploding such`cartridge by striking the same at the opening d by any ordinary hammer.

I have represented a metallic cartridgecase at c with a nippleprojectingthrough the Opening d, which nipple contains the fnlminatingmaterial; and the shape ot' this nipple or other -device for holding thefulminating or detonating material may be varied as desired, so long` asthe same is at the Opening d to be struck by the hammer. 1 What l claim,and desire to secure by Letters Patent, is A series ot' parallelchambers in the cylinder of'a revolving tire-arm, in which the inner orrear ends'ot the chambers are contracted in a hemispherical or taperingform from the ordinary caliber of the chamber to the rear end ot' thecylinder, so `that an abutment is obtained in the cylinder itself at therear of each chamber Without requiring an increase in the length of suchcylinder, as specied.

In witness whereofl have hereunto set my signature this lst day ofDecember,` 1863.

D. WILLIAMSON.

Witnesses:

A.V J. BERGEN, H. N. BRUSH.

